Microsoft TS: Accessing Data with Microsoft .NET Framework 4 - 70-516 Exam Practice Test
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application. You use the Entity Framework Designer to create an Entity Data Model using model-first development.
The database has the following requirements:
-each table must have a datetime column named time_modified
-each table requires a trigger that updates the value of the time_modified column when a row is inserted or updated
You need to ensure that the database script that is created by using the Generate Database From Model
option meets the requirements.
What should you do?
The database has the following requirements:
-each table must have a datetime column named time_modified
-each table requires a trigger that updates the value of the time_modified column when a row is inserted or updated
You need to ensure that the database script that is created by using the Generate Database From Model
option meets the requirements.
What should you do?
Correct Answer: A
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
You deploy a Windows Communication Foundation (WCF) Data Service to a production server.
The application is hosted by Internet Information Services (IIS).
After deployment, applications that connect to the service receive the following error message:
"The server encountered an error processing the request. See server logs for more details."
You need to ensure that the actual exception data is provided to client computers. What should you do?
You deploy a Windows Communication Foundation (WCF) Data Service to a production server.
The application is hosted by Internet Information Services (IIS).
After deployment, applications that connect to the service receive the following error message:
"The server encountered an error processing the request. See server logs for more details."
You need to ensure that the actual exception data is provided to client computers. What should you do?
Correct Answer: A
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. You use the ADO.NET Entity Framework to model entities. You write the following code segment. (Line numbers are included for reference only.)
01 public partial class SalesOrderDetail : EntityObject
02 {
03 partial void OnOrderQtyChanging(short value)
04 {
05 ...
06 {
07 ...
08 }
09 }
10 }
You need to find out whether the object has a valid ObjectStateEntry instance. Which code segment should you insert at line 05?
01 public partial class SalesOrderDetail : EntityObject
02 {
03 partial void OnOrderQtyChanging(short value)
04 {
05 ...
06 {
07 ...
08 }
09 }
10 }
You need to find out whether the object has a valid ObjectStateEntry instance. Which code segment should you insert at line 05?
Correct Answer: A
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
You create a Database Access Layer (DAL) that is database-independent. The DAL includes the following
code segment.
(Line numbers are included for reference only.)
01 static void ExecuteDbCommand(DbConnection connection)
02 {
03 if (connection != null){
04 using (connection){
05 try{
06 connection.Open();
07 DbCommand command = connection.CreateCommand();
08 command.CommandText = "INSERT INTO Categories (CategoryName)
VALUES ('Low Carb')";
09 command.ExecuteNonQuery();
10 }
11 ...
12 catch (Exception ex){
13 Trace.WriteLine("Exception.Message: " + ex.Message);
14 }
15 }
16 }
17 }
You need to log information about any error that occurs during data access.
You also need to log the data provider that accesses the database. Which code segment should you insert
at line 11?
You create a Database Access Layer (DAL) that is database-independent. The DAL includes the following
code segment.
(Line numbers are included for reference only.)
01 static void ExecuteDbCommand(DbConnection connection)
02 {
03 if (connection != null){
04 using (connection){
05 try{
06 connection.Open();
07 DbCommand command = connection.CreateCommand();
08 command.CommandText = "INSERT INTO Categories (CategoryName)
VALUES ('Low Carb')";
09 command.ExecuteNonQuery();
10 }
11 ...
12 catch (Exception ex){
13 Trace.WriteLine("Exception.Message: " + ex.Message);
14 }
15 }
16 }
17 }
You need to log information about any error that occurs during data access.
You also need to log the data provider that accesses the database. Which code segment should you insert
at line 11?
Correct Answer: A
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application.
You use the ADO.NET Entity Framework Designer to model entities.
You need to retrieve an entity, and you must ensure that the entity is loaded in a detached state.
Which MergeOption enumeration value should you use to retrieve the entity?
You use the ADO.NET Entity Framework Designer to model entities.
You need to retrieve an entity, and you must ensure that the entity is loaded in a detached state.
Which MergeOption enumeration value should you use to retrieve the entity?
Correct Answer: A
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You use Microsoft Visual Studio 2010 and .NET Framework 4.0 to develop an application that uses the Entity Data Model for the fallowing database tables.
You need to ensure that the entity that is mapped to the ContectTypeDerived table derives from the entity that is mapped to the ContentTypeBase table. What should you do?
You need to ensure that the entity that is mapped to the ContectTypeDerived table derives from the entity that is mapped to the ContentTypeBase table. What should you do?
Correct Answer: D
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The application contains the following XML fragment:
<ApplicationMenu> <MenuItem name="File">
<MenuItem name="New">
<MenuItem name="Project" />
<MenuItem name="Web Site" />
</MenuItem>
<MenuItem name="Open">
<MenuItem name="Project" />
<MenuItem name="Web Site" />
</MenuItem>
<MenuItem name="Save" />
</MenuItem>
<MenuItem name="Edit">
<MenuItem name="Cut" />
<MenuItem name="Copy" />
<MenuItem name="Paste" />
</MenuItem>
<MenuItem name="Help">
<MenuItem name="Help" />
<MenuItem name="About" />
</MenuItem> </ApplicationMenu>
The application queries the XML fragment by using the XmlDocument class. You need to select all the descendant elements of the MenuItem element that has its name attribute as File. Which XPath expression should you use?
<ApplicationMenu> <MenuItem name="File">
<MenuItem name="New">
<MenuItem name="Project" />
<MenuItem name="Web Site" />
</MenuItem>
<MenuItem name="Open">
<MenuItem name="Project" />
<MenuItem name="Web Site" />
</MenuItem>
<MenuItem name="Save" />
</MenuItem>
<MenuItem name="Edit">
<MenuItem name="Cut" />
<MenuItem name="Copy" />
<MenuItem name="Paste" />
</MenuItem>
<MenuItem name="Help">
<MenuItem name="Help" />
<MenuItem name="About" />
</MenuItem> </ApplicationMenu>
The application queries the XML fragment by using the XmlDocument class. You need to select all the descendant elements of the MenuItem element that has its name attribute as File. Which XPath expression should you use?
Correct Answer: A
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You use Microsoft .NET Framework 4 to develop an application that connects to a Microsoft SQL Server
2008 database.
The database contains a ClassStudent table that contains the StudentID for students who are enrolled in
the classes.
You add the following stored procedure to the database.
CREATE PROCEDURE [dbo].[GetNumEnrolled] @ClassID INT, @NumEnrolled INT OUTPUT
AS BEGIN SET NOCOUNT ON SELECT @NumEnrolled = COUNT(StudentID)
FROM ClassStudent
WHERE (ClassID = @ClassID)
END
You write the following code. (Line numbers are included for reference only.)
01 private int GetNumberEnrolled(string classID)
02 {
03 using (SqlConnection conn = new SqlConnection(GetConnectionString())
04 {
05 SqlCommand cmd = new SqlCommand("GetNumEnrolled", conn);
06 cmd.CommandType = CommandType.StoredProcedure;
07 SqlParameter parClass = cmd.Parameters.Add("@ClassID", SqlDbType.Int,
4, "classID");
08 SqlParameter parNum = cmd.Parameters.Add("@NumEnrolled",
SqlDbType.Int);
09 ...
10 conn.Open()
11 ...
12 }
13 }
You need to ensure that the GetNumberEnrolled method returns the number of students who are enrolled
for a specific class.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
2008 database.
The database contains a ClassStudent table that contains the StudentID for students who are enrolled in
the classes.
You add the following stored procedure to the database.
CREATE PROCEDURE [dbo].[GetNumEnrolled] @ClassID INT, @NumEnrolled INT OUTPUT
AS BEGIN SET NOCOUNT ON SELECT @NumEnrolled = COUNT(StudentID)
FROM ClassStudent
WHERE (ClassID = @ClassID)
END
You write the following code. (Line numbers are included for reference only.)
01 private int GetNumberEnrolled(string classID)
02 {
03 using (SqlConnection conn = new SqlConnection(GetConnectionString())
04 {
05 SqlCommand cmd = new SqlCommand("GetNumEnrolled", conn);
06 cmd.CommandType = CommandType.StoredProcedure;
07 SqlParameter parClass = cmd.Parameters.Add("@ClassID", SqlDbType.Int,
4, "classID");
08 SqlParameter parNum = cmd.Parameters.Add("@NumEnrolled",
SqlDbType.Int);
09 ...
10 conn.Open()
11 ...
12 }
13 }
You need to ensure that the GetNumberEnrolled method returns the number of students who are enrolled
for a specific class.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
Correct Answer: A,B
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application uses the ADO.NET Entity Framework to model entities.
The application allows users to make changes while disconnected from the data store.
Changes are submitted to the data store by using the SubmitChanges method of the DataContext object.
You receive an exception when you call the SubmitChanges method to submit entities that a user has
changed in offline mode.
You need to ensure that entities changed in offline mode can be successfully updated in the data store.
What should you do?
The application uses the ADO.NET Entity Framework to model entities.
The application allows users to make changes while disconnected from the data store.
Changes are submitted to the data store by using the SubmitChanges method of the DataContext object.
You receive an exception when you call the SubmitChanges method to submit entities that a user has
changed in offline mode.
You need to ensure that entities changed in offline mode can be successfully updated in the data store.
What should you do?
Correct Answer: B
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You use Microsoft .NET Framework 4.0 to develop an application that uses the Entity Framework.
The application defines the following Entity SQL (ESQL) query, which must be executed against the mode.
string prodQuery = "select value p from Products as p where
p.ProductCategory.Name = @p0";
You need to execute the query. Which code segment should you use?
The application defines the following Entity SQL (ESQL) query, which must be executed against the mode.
string prodQuery = "select value p from Products as p where
p.ProductCategory.Name = @p0";
You need to execute the query. Which code segment should you use?
Correct Answer: B
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You develop a Microsoft .NET application that uses Entity Framework to store entities in a Microsft SQL
Server 2008 database.
While the application is disconnected from the database, entities that are modified, are serialized to a local
file.
The next time the application connects to the database, it retrieves the identity from the database by using
an object context
named context and stores the entity in a variable named remoteCustomer.
The application then serializes the Customer entity from the local file and stores the entity in a variable
named localCustomer.
The remoteCustomer and the localCustomer variables have the same entity key.
You need to ensure that the offline changes to the Customer entity is persisted in the database when the
ObjectContext.SaveChanges() method is called.
Which line of code should you use?
Server 2008 database.
While the application is disconnected from the database, entities that are modified, are serialized to a local
file.
The next time the application connects to the database, it retrieves the identity from the database by using
an object context
named context and stores the entity in a variable named remoteCustomer.
The application then serializes the Customer entity from the local file and stores the entity in a variable
named localCustomer.
The remoteCustomer and the localCustomer variables have the same entity key.
You need to ensure that the offline changes to the Customer entity is persisted in the database when the
ObjectContext.SaveChanges() method is called.
Which line of code should you use?
Correct Answer: C
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database.
The application uses the following object query to load a product from the database.
(Line numbers are included for reference only.)
01 using (AdventureWorksEntities advWorksContext = new AdventureWorksEntities
())
02 {
03 ObjectQuery <Product> productQuery = advWorksContext.Product.Where
("it.ProductID = 900");
04 ...
05 }
You need to log the command that the query executes against the data source. Which code segment should you insert at line 04?
The application connects to a Microsoft SQL Server database.
The application uses the following object query to load a product from the database.
(Line numbers are included for reference only.)
01 using (AdventureWorksEntities advWorksContext = new AdventureWorksEntities
())
02 {
03 ObjectQuery <Product> productQuery = advWorksContext.Product.Where
("it.ProductID = 900");
04 ...
05 }
You need to log the command that the query executes against the data source. Which code segment should you insert at line 04?
Correct Answer: B
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application that
connects to a database by using the Entity Framework.
You create an Entity Data Model (EDM) by using the Generate from database wizard for the following
tables.
You need to ensure that the EDM contains an entity type named Employee that contains all of the data from
both tables.
What should you do?
connects to a database by using the Entity Framework.
You create an Entity Data Model (EDM) by using the Generate from database wizard for the following
tables.
You need to ensure that the EDM contains an entity type named Employee that contains all of the data from
both tables.
What should you do?
Correct Answer: B
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